Basically what Anna said, plus find something that interests you. That will help keep your learning sustainable, as it were. All the best :)

Don't worry, I can help you improve your English

Expose yourself to English as much as possible (reading, writing, watching/listening). Find some good materials to learn from. Find a good teacher to guide you, correct your mistakes and reinforce good habits and language skills. Practice practice practice. Ideally find a native speaker to practice with. But even having conversations (out loud!) with yourself can help a lot. Get comfortable with making mistakes. Don’t be proud. Practice some more. Don’t give up. 加油💪🏻

Yes, chat me privately

Read more and listen more~ Input is very important!